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LM4510
SNVS533D –SEPTEMBER 2007–REVISED NOVEMBER 2014
LM4510 Synchronous Step-Up DC/DC Converter with True Shutdown Isolation
1 Features
3 Description
The LM4510 is a current mode step-up DC/DC
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18 V@ 80 mA from 3.2 V Input
5 V @ 280 mA from 3.2 V Input
No External Schottky Diode Required
85% Peak Efficiency
converter with
a 1.2-A internal NMOS switch
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designed to deliver up to 120 mA at 16 V from a Li-
Ion battery.
The device's synchronous switching operation (no
external Schottky diode) at heavy-load, and non-
synchronous switching operation at light-load,
maximizes power efficiency.
Soft Start
True Shutdown Isolation
Stable with Small Ceramic or Tantalum Output
Capacitors
True shutdown function by synchronous FET and
related circuitry ensures input and output isolation.
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Output Short-Circuit Protection
Feedback Fault Protection
A programmable soft-start circuit allows the user to
limit the amount of inrush current during start-up. The
output voltage can be adjusted by external resistors.
Input Undervoltage Lock Out
Thermal Shutdown
The LM4510 features advanced short-circuit
protection to maximize safety during output to ground
short condition. During shutdown the feedback
resistors and the load are disconnected from the
input to prevent leakage current paths to ground.
0.002-µA Shutdown Current
Wide Input Voltage Range: 2.7 V to 5.5 V
1-MHz Fixed Frequency Operation
Low-profile 10-pin WSON Package (3 mm x 3 mm
x 0.8 mm)
Device Information(1)
PART NUMBER
LM4510
PACKAGE
BODY SIZE (NOM)
2 Applications
WSON (10)
3.00 mm x 3.00 mm
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Organic LED Panel Power Supply
Charging Holster
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
White LED Backlight
space
space
USB Power Supply
Class D Audio Amplifier
Camera Flash LED Driver
Typical Application Circuit
Efficiency at VOUT = 16 V
L = 4.7 PH
V
2.7V ± 5.5V
IN
100
V = 4.5V
IN
V
= 5.5V
IN
V
OUT
16.0V
VIN
EN
SW VOUT
FB
90
80
70
60
50
40
R
240k
F1
C
IN
4.7 PF
VIN = 3.6V
C
OUT
10 PF
LOAD
SS
COMP
AGND
R
F2
20.5k
V
IN
= 2.7V
R
C
C
10 nF
S
46.4k
C
C2
15 pF
PGND
C
C1
2.2 nF
0
5 10 15 20 25 30 35 40 45 50 55 60 65 70
(mA)
I
OUT
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.